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Finding the Fourth Proportional to 375,393.25, 518,053.20 and 228,217.87

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Solution

The fourth proportional to 375,393.25, 518,053.20 and 228,217.87 is: 314,947.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,393.25 : 518,053.20 = 228,217.87 : x
  2. Step 2: Convert to fraction form
    375,393.25/518,053.20 = 228,217.87/x
  3. Step 3: Cross multiply
    375,393.25x = 518,053.20 × 228,217.87
  4. Step 4: Simplify right side
    375,393.25x = 118,228,995,260.42
  5. Step 5: Solve for x
    x = 118,228,995,260.42/375,393.25
  6. Step 6: Final answer
    x = 314,947.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.